I am making a design for test of DELSIG-ADC, Basically it's working, Then I think how to get more precise resolution. Finally want to compensate the offset. But which radix of the offset? In actual ADC value? Or converted value to u/m/ V? I don't know, One reason is no offset value has not able to get. Even It seems has some offset value, But always these value are ZERO, Is it OK? Configuration: [ resolution: 20bit, rate: 10/sec, continuous conversion, input mode: single-end, buffer mode: rail-to-rail, range: 0-6*vref, Vref: 1.024v ] Regards, Happy ADC

Hi Dana-san, thank you. The radix is presumed as adc count, because commonly number is count, Each converted value is depend on what unit user is use. Anyway, i have all source code then check up, it described [ Parameters: int32 offset : Offset in counts ] OK, nonetheless offset is always zero, measured value was change when every i did zero-in procedure. (this design can do zero-in when Sw was pushed) Single-end mode and rail-to-rail drive that can't measure offset value when input is zero ? right? A question is still remain but it's not a deal, not to hurry. Thank you, Happy ADC!